I must afforest you must afforest she must afforest we must afforest you must afforest they must afforest
V-ing form
I must be afforesting you must be afforesting she must be afforesting we must be afforesting you must be afforesting they must be afforesting
Perfect
I must have afforested you must have afforested she must have afforested we must have afforested you must have afforested they must have afforested
V-ing perfect
I must have been afforesting you must have been afforesting she must have been afforesting we must have been afforesting you must have been afforesting they must have been afforesting
Negation
Simple form
I mustn't afforest you mustn't afforest she mustn't afforest we mustn't afforest you mustn't afforest they mustn't afforest
V-ing form
I mustn't be afforesting you mustn't be afforesting she mustn't be afforesting we mustn't be afforesting you mustn't be afforesting they mustn't be afforesting
Perfect
I mustn't have afforested you mustn't have afforested she mustn't have afforested we mustn't have afforested you mustn't have afforested they mustn't have afforested
V-ing perfect
I mustn't have been afforesting you mustn't have been afforesting she mustn't have been afforesting we mustn't have been afforesting you mustn't have been afforesting they mustn't have been afforesting
Interrogative form
Simple form
must I afforest? must you afforest? must she afforest? must we afforest? must you afforest? must they afforest?
V-ing form
must I be afforesting? must you be afforesting? must she be afforesting? must we be afforesting? must you be afforesting? must they be afforesting?
Perfect
must I have afforested? must you have afforested? must she have afforested? must we have afforested? must you have afforested? must they have afforested?
V-ing perfect
must I have been afforesting? must you have been afforesting? must she have been afforesting? must we have been afforesting? must you have been afforesting? must they have been afforesting?
Interro-negative form
Simple form
mustn't I afforest? mustn't you afforest? mustn't she afforest? mustn't we afforest? mustn't you afforest? mustn't they afforest?
V-ing form
mustn't I be afforesting? mustn't you be afforesting? mustn't she be afforesting? mustn't we be afforesting? mustn't you be afforesting? mustn't they be afforesting?
Perfect
mustn't I have afforested? mustn't you have afforested? mustn't she have afforested? mustn't we have afforested? mustn't you have afforested? mustn't they have afforested?
V-ing perfect
mustn't I have been afforesting? mustn't you have been afforesting? mustn't she have been afforesting? mustn't we have been afforesting? mustn't you have been afforesting? mustn't they have been afforesting?